L – angles

L51x51x9.5

Standard: ASTM A6/A6M (désignations métriques)Source: SI values from the AISC v16.0 database (ASTM A6 shapes common to Canada)
ASTM A6 rolled shapes are the same in Canada; the CISC list may differ slightly (availability).
xyb = 50.8d = 50.8t = 9.53t = 9.53
Cross-section, to scaledimensions in mm

Dimensions

Depthd
50.8mm
Widthb
50.8mm
Thicknesst
9.53mm
Distance k (design)kdes
15.9mm
Distance k (detailing)kdet
15.9mm

Mass and area

Mass per lengthm
7kg/m
Cross-sectional areaA
884mm²

Strong axis x–x

Moment of inertiaIx
0.19810⁶ mm⁴
Elastic section modulusSx
5.710³ mm³
Plastic section modulusZx
10.310³ mm³
Radius of gyrationrx
15mm

Weak axis y–y

Moment of inertiaIy
0.19810⁶ mm⁴
Elastic section modulusSy
5.710³ mm³
Plastic section modulusZy
10.310³ mm³
Radius of gyrationry
15mm

Principal axes

Moment of inertia, minor principal axisIz
0.084510⁶ mm⁴
Section modulus, minor principal axisSz
3.7210³ mm³
Radius of gyration, minor principal axisrz
9.8mm
Tangent of principal axis angletan α
1

Torsion and stability

Torsional constantJ
27.410³ mm⁴
Warping constantCw
0.0046710⁹ mm⁶
Polar radius (shear center)r̄o
26.7mm
Flexural constantH
0.64

Centers

Centroidx̄
16.1mm
Centroidȳ
16.1mm
Plastic neutral axisxp
8.71mm
Plastic neutral axisyp
8.71mm

Slenderness ratios

Wall slendernessb/t
5.33

Equivalents in other standards